The problem started on Sunday morning. My back felt a little stiff, but not unusually so given the weather. The day continued in a relaxed and pleasant way, with coffee, sunshine, and then some moderately satisfying games of Team Fortress 2. At 7pm, I went to get up off the couch and get a drink, and realized that something was badly wrong. My back was sore and stiff. I used the heat pad for a while, took some aspirin, and had an early night.
My back was still sore this week, so today I tried acupuncture. I’d been meaning to try it, but my back hadn’t bothered me for a couple of years, so I hadn’t had the need. While I’m skeptical about acupuncture’s ability to deal with (say) asthma or high blood pressure, when it comes to back pain I can see a plausible mechanism for it working. I’ve had shooting electric pain that feels like it goes down my left leg all the way to my toes.